EP4315735C0 - System und verfahren zur zeitsynchronisierung - Google Patents

System und verfahren zur zeitsynchronisierung

Info

Publication number
EP4315735C0
EP4315735C0 EP22706894.7A EP22706894A EP4315735C0 EP 4315735 C0 EP4315735 C0 EP 4315735C0 EP 22706894 A EP22706894 A EP 22706894A EP 4315735 C0 EP4315735 C0 EP 4315735C0
Authority
EP
European Patent Office
Prior art keywords
time synchronization
synchronization
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP22706894.7A
Other languages
English (en)
French (fr)
Other versions
EP4315735A1 (de
EP4315735B1 (de
Inventor
Omar Iqbal
Alexander Koehler-Sidki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arqit Ltd
Original Assignee
Arqit Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arqit Ltd filed Critical Arqit Ltd
Publication of EP4315735A1 publication Critical patent/EP4315735A1/de
Application granted granted Critical
Publication of EP4315735C0 publication Critical patent/EP4315735C0/de
Publication of EP4315735B1 publication Critical patent/EP4315735B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0075—Arrangements for synchronising receiver with transmitter with photonic or optical means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/70—Photonic quantum communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0852—Quantum cryptography

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Optical Communication System (AREA)
  • Radio Relay Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Communication Control (AREA)
EP22706894.7A 2021-03-26 2022-02-21 System und verfahren zur zeitsynchronisierung Active EP4315735B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2104318.7A GB2605192B (en) 2021-03-26 2021-03-26 A system and method for time synchronisation
PCT/GB2022/050459 WO2022200757A1 (en) 2021-03-26 2022-02-21 A system and method for time synchronisation

Publications (3)

Publication Number Publication Date
EP4315735A1 EP4315735A1 (de) 2024-02-07
EP4315735C0 true EP4315735C0 (de) 2025-12-03
EP4315735B1 EP4315735B1 (de) 2025-12-03

Family

ID=75783603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22706894.7A Active EP4315735B1 (de) 2021-03-26 2022-02-21 System und verfahren zur zeitsynchronisierung

Country Status (6)

Country Link
US (1) US20240162992A1 (de)
EP (1) EP4315735B1 (de)
AU (1) AU2022244312A1 (de)
CA (1) CA3213260A1 (de)
GB (1) GB2605192B (de)
WO (1) WO2022200757A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2613330B (en) * 2021-10-18 2024-02-07 Arqit Ltd Optical switching for quantum key distribution
EP4627757A1 (de) * 2022-11-30 2025-10-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und verfahren zur synchronisation von quantenschlüsselverteilungssystemen
GB2633816A (en) * 2023-09-22 2025-03-26 Bae Systems Plc LDEW optical data link
WO2025178563A1 (en) * 2024-02-20 2025-08-28 Han Chuen LIM Systems and methods for abnormality detection in quantum key distribution
GB2642294A (en) * 2024-06-28 2026-01-07 Arqit Ltd A system and method for time transfer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108540250B (zh) * 2018-04-23 2020-04-21 佛山市顺德区德雅军民融合创新研究院 一种用于星地量子密钥分发的基于激光脉冲的快速时间同步方法

Also Published As

Publication number Publication date
GB2605192A (en) 2022-09-28
CA3213260A1 (en) 2022-09-29
WO2022200757A1 (en) 2022-09-29
US20240162992A1 (en) 2024-05-16
GB202104318D0 (en) 2021-05-12
EP4315735A1 (de) 2024-02-07
GB2605192B (en) 2023-05-31
AU2022244312A1 (en) 2023-11-09
EP4315735B1 (de) 2025-12-03
GB2605192A8 (en) 2023-04-05

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